Super Sonic Acrobatic Rocket-Powered Battle Cars enter the Konami Code followed by Start when the game is loading.
Hard Corps Uprising enter before the first stage during loading screen & listen or at the title screen with L3 and R3.
Castlevania Lords of Shadow enter at load screen of with analog sticks.
Teenage Mutant Ninja Turtles enter at title screen and listen.)
Dance Dance Revolution Ultramix if a gamepad is in 4th controlle port enter code during the credits.
Dance Dance Revolution Ultramix 2 enter the Konami code in reverse in the credits screen.
↑ ↑ ↓ ↓ ← → ← →
And of course someone had to check in with the best XBox One games. YMMV